v2.4.1.9

Income taxes (Details 2) (USD $) In Thousands, unless otherwise specified	Dec. 31, 2014	Dec. 31, 2013	Dec. 31, 2012
Income taxes
Uncertain tax positions	$ 459us-gaap_UnrecognizedTaxBenefits	$ 445us-gaap_UnrecognizedTaxBenefits
Uncertain tax positions, reduction to deferred tax assets	106wifi_UnrecognizedTaxBenefitsRelatedToReductionToDeferredTaxAssets
Accrued interest, net of federal income tax benefits, and penalties	67us-gaap_UnrecognizedTaxBenefitsIncomeTaxPenaltiesAndInterestAccrued	53us-gaap_UnrecognizedTaxBenefitsIncomeTaxPenaltiesAndInterestAccrued
Unrecognized tax benefits that would affect the effective tax rate	286us-gaap_UnrecognizedTaxBenefitsThatWouldImpactEffectiveTaxRate
Reconciliation of unrecognized tax benefits
Balance at the beginning of the period	392wifi_UncertainTaxPositions		392wifi_UncertainTaxPositions
Balance at the end of the period	$ 392wifi_UncertainTaxPositions		$ 392wifi_UncertainTaxPositions

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- Definition

Amount of unrecognized tax benefits pertaining to uncertain tax positions taken in tax returns.

+ References

Reference 1: http://www.xbrl.org/2003/role/presentationRef

-Publisher FASB

-Name Accounting Standards Codification

-Glossary Unrecognized Tax Benefit

-URI http://asc.fasb.org/extlink&oid=6527854



Reference 2: http://www.xbrl.org/2003/role/presentationRef

-Publisher FASB

-Name Accounting Standards Codification

-Topic 740

-SubTopic 10

-Section 50

-Paragraph 15A

-Subparagraph (a)

-URI http://asc.fasb.org/extlink&oid=6907707&loc=SL6600010-109319

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- Definition

Amount accrued for interest on an underpayment of income taxes and penalties related to a tax position claimed or expected to be claimed in the tax return.

+ References

Reference 1: http://www.xbrl.org/2003/role/presentationRef

-Publisher FASB

-Name Accounting Standards Codification

-Topic 740

-SubTopic 10

-Section 50

-Paragraph 15

-Subparagraph (c)

-URI http://asc.fasb.org/extlink&oid=6907707&loc=d3e32718-109319

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- Definition

The total amount of unrecognized tax benefits that, if recognized, would affect the effective tax rate.

+ References

Reference 1: http://www.xbrl.org/2003/role/presentationRef

-Publisher FASB

-Name Accounting Standards Codification

-Topic 740

-SubTopic 10

-Section 50

-Paragraph 15A

-Subparagraph (b)

-URI http://asc.fasb.org/extlink&oid=6907707&loc=SL6600010-109319

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- Definition

Amount of unrecognized tax benefits pertaining to uncertain tax positions taken in tax returns at period end.

+ References

No definition available.

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- Definition

Represents the amount of uncertain tax positions, which is a reduction to deferred tax assets that is presented as net of uncertain tax positions in the accompanying consolidated balance sheets.

+ References

No definition available.

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